To install c-make, linux
https://vitux.com/how-to-install-cmake-on-ubuntu-18-04/
while you are at the ./< Name of the folder you stored the repo>/cmake-build-debug compile using
cmake --build .
To make a new build, create a folder with the desired name and cd in to that folder and run CMake to configure the project and generate a native build system:
mkdir <folder name>
cd <folder name>
cmake ../<exec name>
Finally to run, while you are in the build folder
./<exec name> arg1 arg2 ..